baber/WOPTO huggingface dataset:
Patent CA-1069593-A (CA)
Inventor: BRADLEY STEVAN D
IPC: H03G1/00
Filed: 1976-11-25
Granted: 1980-01-08
Abstract: UNMATCHED FIELD EFFECT TRANSISTORS PROVIDING   MATCHED VOLTAGE-CONTROLLED RESISTANCES by Stevan D. Bradley ABSTRACT OF DISCLOSURE           Matched voltage-controlled resistances are provided across the drain-to-source junctions of a pair of FET's, each FET having a gate electrode connected through an associated control resistor to the same one terminal of a source of DC control voltage; having a source electrode electrically connected to the same other terminal of the voltage source; and having an associated feedback resistor electrically connected between its drain and gate electrodes.  The drain electrodes are preferably capacitively coupled to input or output terminals to prevent DC loading of the FET network by external circuitry.  A resistor is also connected across the drain-to-source junction of each FET to limit the maximum value of net resistance presented thereby.  The resistance of one of the control resistors is adjusted to have a value which causes the net drain-to-source resistance of the associated FET to have the same value as that of the other FET for a particular value of control voltage.  The net drain-to-source resistances of the two FET's are then closely matched over a range of control voltages.
Patent CA-1093669-A (CA)
Inventor: HAMMEL RONALD O
IPC: H02J9/06
Filed: 1976-12-29
Granted: 1981-01-13
Abstract: ABSTRACT OF THE DISCLOSURE Circuitry is provided for automatically selectively switching a load from a primary power source to a secondary power source, and back again, including switch means connected between the primary and secondary power sources, and control circuit means which controls opening and closing of the switch according to the sensed voltage level of the primary source.  Once the secondary power source has been switched on, at such time as its voltage level drops below a predetermined level the switch can be adapted to automa-tically disconnect the secondary power source (e.g., battery) from the load.
Patent CA-1059403-A (CA)
Inventor: MENZIES JAMES D
IPC: G05D16/06
Filed: 1977-01-10
Granted: 1979-07-31
Abstract: ABSTRACT OF DISCLOSURE           A valve for the automatic control of the supply of a fluid to a system, the valve comprising two chambers one of which is in communication with the fluid supply via a trickle valve, and with the system, and the other of which, being open to atmosphere, is defined by a compressible hollow member disposed Within the first chamber, and whose internal volume is determined by the difference between the pressures in the two chambers, the compressible hollow member having an aperture therein formed as a seating for a valve member disposed in the first chamber such that when the valve member is unseated the two chambers are connected, the position of the valve member being adjustable by means outside said first chamber and operative according to some condition in the system to which the fluid is supplied.
Patent CA-1070051-A (CA)
Inventor: PORNER MIROSLAV J
IPC: A63B71/08
Filed: 1977-01-26
Granted: 1980-01-22
Abstract: ABSTRACT OF DISCLOSURE      The invention relates to a protective device such as can be used for protecting the limbs of humans, or for example for protecting animals such as for example the fetlocks of horses.   The Invention provides for a protective device including at least one and preferably a plurality of juxtaposed layers of substantially re-silient and shock absorbant material, located within an outer covering.   The substantially resilient and shock absorbant material is preferably in the form of sheet material integrally formed with open faced studs or pockets, and closed by a backing material, so that a plurality of air pockets are formed within the sheet material.   This substantially resilient and shock ab-sorbant material, when located within an outer covering, cushions blows or forces applied to the area to be pro-tected.   In one form of the invention, means are pro-vided on an outer surface of the protective device to enable the device to be located relative to an area to be protected.   In one form of the invention, the loca-ting means is in the  form of a plurality of spaced apart and juxtaposed strips of hooked material which will en-gage with clothing and the like which may be located about or adjacent the protective device.
Patent CA-1044553-A (CA)
Inventor: JOHNSON ROBERT C
IPC: A24B3/18
Filed: 1977-02-14
Granted: 1978-12-19
Abstract: A TIERED CONTAINER WITH FLOW DISTRIBUTION SYSTEM            Abstract of the Disclosure A tiered container for use in an autoclave of an apparatus used in a process for increasing the filling capacity of tobacco, said process utilizing a compound to impregnate the tobacco and a hot gas to vaporize the impregnating compound.
Patent CA-1087330-A (CA)
Inventor: ALLAN JOHN L H
IPC: C02F1/00
Filed: 1977-03-07
Granted: 1980-10-07
Abstract: WASTE TREATMENT PROCESS                      ABSTRACT       A process for dewatering aqueous waste sludges containing suspended, organic matter which involves the sequential steps of treating the sludge with lime, neu-tralizing with an acid and filtering under pressure. Solids contents of the filter cake in the range of 60-70 weight percent can easily be obtained at relatively mod-erate pressures of 10-12 atmospheres.     --i--
Patent CA-1063990-A (CA)
Inventor: HEIN GEORGE N JR
IPC: B04B9/12
Filed: 1977-04-12
Granted: 1979-10-09
Abstract: Abstract of The Disclosure An air levitation jet located in the center of a rotor seat to provide a supporting and holding air flow between a rotor and the rotor seat.  Integrally formed within both the rotor and the rotor seat are conical and frustoconical portions which respect-ively establish a conical flow path and an adjoining frustoconical flow path to aid not only in the centering of the rotor within the rotor seat, but also in the retaining of the rotor in alignment with its rotational axis.  Air under pressure exiting the levitat-ion air jet in the center of the rotor seat proceeds along the con-ical flow path and into the frustoconical flow path with sufficient velocity to establish a reduced pressure in the flow path between the rotor and rotor seat that is less than atmospheric pressure, causing the rotor to remain securely positioned on a cushion of air within the rotor seat.
Patent CA-1061580-A (CA)
Inventor: HILL WILLIAM L
IPC: E02B17/02
Filed: 1977-04-29
Granted: 1979-09-04
Abstract: ABSTRACT OF THE DISCLOSURE         A system for preventing a surface ice sheet from cracking and failing under a load based upon the principle of counteracting lateral tension forces in the lower portion of the ice sheet.  A matrix of cables is placed on the bottom surface of the ice, and the ends of the cables are anchored on the top surface of the ice.  As new ice forms, the matrix becomes embedded in the ice sheet and reinforces it in tension.
Patent CA-1096954-A (CA)
Title: Monitoring arrangement for monitoring a change from a  normal condition of any one of a plurality of condition sensing devices
Inventor: WIBERG LEIF
IPC: H04B3/50
Filed: 1977-06-10
Granted: 1981-03-03
Abstract: ABSTRACT OF THE DISCLOSURE        A monitoring arrangement for monitoring a change from a normal condition of any one of a plurality of condition sensing devices.  It includes a common two conductor circuit connecting the condition sensing devices.  A central monitoring apparatus is connected to the common two conductor circuit and supplies current to the circuit.  Each of the condition sensing devices includes a device for limiting the amount of current flowing therethrough from the common two conductor circuit; a mechanism to detect and to react to any change from a normal condition being sensed; and a mechanism to interrupt the current to at least all following condition sensing devices in the circuit upon reaction of the condition sensing device to a change in a condition being sensed.  An apparatus is formed as part of the central monitoring apparatus for measuring and indicating a magnitude of current being supplied to the common two conductor circuit at any given time.
Patent CA-1091691-A (CA)
Inventor: LALK JAMES W
IPC: C07D263/14
Filed: 1977-06-20
Granted: 1980-12-16
Abstract: ABSTRACT          Salts of 2-aminoethyl methacrylate are prepared by reacting equimolar amounts of 2-isopropenyl-2-oxazoline and a mineral acid in an aqueous reaction medium.  The process is conducted at a temperature of up to 20°C, preferably at 0-5°C.          In a preferred embodiment, a vinyl polymerization inhibitor is added to the aqueous medium.          Maximum product yield and purity are obtained by maintaining the pH of the reaction mixture the same as the pH of the aqueous solution of the 2-aminoethyl methacrylate salt.
Patent CA-1115612-A (CA)
Inventor: RABISCHONG PIERRE
IPC: A61F5/04
Filed: 1977-07-22
Granted: 1982-01-05
Abstract: -                    ABSTRACT OF THE DISCLOSURE     .    An orthopaedic appliance  which enables paralytics to stand erect has a plurality of separate pieces of clothing to be fitted around body parts located between joints, the pieces having an inflatable support structure in the form of vertical tubes, and including belts formed of two strips of cloth fastened to opposite sides of the support structure, and devices inter-connecting pieces of clothing located on opposite sides of a body joint in the form of two rows of pins attached to the inflatable structures of the pieces of clothing and a mechanical articulation interconnecting the rows of pins. The inflatable tubes have generally rectangular cross-sections and the widths of the tubes of each support structure decrease symmetrically from the centre to the side edges of the structure. The supporting devices connecting pieces of clothing on opposite sides of the hip joint have one row of pins detachably connected to the mechanical articulation.
Patent CA-1077312-A (CA)
Inventor: WALDRON STEPHEN H
IPC: B23B45/00
Filed: 1977-07-29
Granted: 1980-05-13
Abstract: A B S T R A C T           A small housing which may be held in the hand of a surgeon has an open-ended socket into which a rotary bur assembly may be inserted and latched in place.  A driven gear on the rotary bur assembly meshes with a driving gear at the end of the socket.  The rotary bur assembly includes a sleeve supporting the bur on axially spaced bearings, and the sleeve has an external annular shoulder.  A latch moves through a side window in the housing to engage the annular shoulder to hold the gears in proper mesh, and a spring prevents accidental disengagement of the latch.
Patent CA-1087223-A (CA)
Inventor: DURLING HAROLD
IPC: B60T13/26
Filed: 1977-11-01
Granted: 1980-10-07
Abstract: AIR BRAKE SYSTEM WITH PRESSURE HOLDING VALVE            Abstract A vehicle air brake system includes spring set air re-leased parking brakes to which air is supplied through a pressure holding valve which maintains the air chambers of the parking brakes at a predetermined pressure even though the air brake system may be at operating pressures substan-tially lower than the predetermined pressure.  When the air pressure in the air brake system falls below operational levels, the pressure holding valve responds to release the air from the parking brake chambers.
Patent CA-1080522-A (CA)
Inventor: BOND ANDREW C
IPC: G10D1/08
Filed: 1977-11-15
Granted: 1980-07-01
Abstract: ABSTRACT OF THE DISCLOSURE           A fretboard adapted to be fitted to the neck of a stringed instrument is described.  The fretboard comprises a unitary, elongate body having first and second longitudinally spaced ends to be arranged adjacent the body and head ends, respectively, of a stringed instrument, and a plurality of integrally formed frets in the normal fret positions.         The frets comprise transversely extending crests of a plurality of triangular shaped ridges arranged in succession along a surface of the body from the first end to the second end.  Each ridge comprises a relatively short side steeply inclined to the longitudinal axis of the body and a relatively long, substantially planar side sloping from the top of the short side to the base of the short side of the next following ridge in the direction of second end.  The top of each short side, where it meets its associated relatively long side, is rounded with a centre of curvature located on an imaginary line extending substantially at right angles to the longitudinal axis of the body and passing through the crest of the associated ridge.  The crest of each ridge has a hard, wear resistant surface.
Patent CA-1082394-A (CA)
Inventor: SCOTT STEVEN W
IPC: C08L67/00
Filed: 1977-11-25
Granted: 1980-07-22
Abstract: ABSTRACT OF THE DISCLOSURE           A thermoplastic molding composition comprising an aromatic carbonate polymer and a polyester derived from a cyclohexanedimethanol.
Patent CA-1103822-A (CA)
Inventor: MIZUSHIMA MASASHI
IPC: H04N9/30
Filed: 1978-02-07
Granted: 1981-06-23
Abstract: DRIVER SYSTEM OF      MEMORY TYPE GRAY-SCALE DISPLAY PANEL          ABSTRACT OF THE DISCLOSURE         A driver system of a display panel includ-ing a matrix of luminescent elements with bi-stable operation condition comprises a circuit arrangement for combining a plurality of divided lighting periods to provide a gray-scale display and a circuit arrangement for increasing or decreasing the respective widths of the divided lighting periods in correlation with each other, whereby a control of luminance with gray-scale is provided.
Patent CA-1082992-A (CA)
Title: Method and apparatus for sewing trouser-fly units and  the like
Inventor: VAN AMBURG WILLIAM F
IPC: D05B23/00
Filed: 1978-02-09
Granted: 1980-08-05
Abstract: ABSTRACT OF THE DISCLOSURE           Trouser-fly pieces are sewn to a continuous slide fastener chain and at the same time are serged along a curved edge.  Variable spacing between the serged curved edge and the line or lines of stitches sewing the fly pieces to the fastener chain is made by selective puckering of each fly piece between two sewing mechanisms.  The trailing end of each fly piece is lifted during the sewing to permit the positioning of the next fly piece against a stop.
Patent CA-1111843-A (CA)
Title: Aromatic nitro compounds
Inventor: HINSHAW JERALD C
IPC: G03C7/26
Filed: 1978-03-06
Granted: 1981-11-03
Abstract: Abstract of the Disclosure Aromatic nitro compounds are disclosed where the aromatic ring contains electron-withdrawing groups and said aromatic nitro compound is capable of undergoing intramolecular nucleophilic displacement after reduction of the nitro group. The compounds are especially useful in photographic elements where an image dye-providing material or a photographic reagent are released upon cleavage from the compound.
Patent CA-1097714-A (CA)
Inventor: MILIANOWICZ STANISLAW A
IPC: H01H33/915
Filed: 1978-03-22
Granted: 1981-03-17
Abstract: ABSTRACT OF THE DISCLOSURE A puffer circuit interrupter is taught.  Arc ex-tinguishing gas is vented through a hollow stationary arc contact into a gas condenser.  The gas condenser is an elon-gated toroid having a well-defined open central region.  The gas condensing portion of the toroid is formed from over-lapping layers of wound copper mesh.  The elongated central opening of the toroid is aligned with the hollow electrode for receiving the arc quenching gas.  At one end of the condenser is an external conductor for the puffer circuit interrupter.  At the other end of the condenser is a disc having a central opening therein through which the hollow electrode protrudes.  The condenser is thus firmly maintained longitudinally between the disc and the external electrode. surrounding the circumferential periphery of the condenser and bridging the space between the disc and the electrode are longitudinally disposed circumferentially spaced fingers. The spaced fingers form a support cage for the condenser. Furthermore, the fingers extend longitudinally beyond the disc for making electrical contact with a movable contact in the circuit breaker apparatus.  These fingers thus act as the rated current carrying conductors when the circuit breaker apparatus is in the closed state.
Patent CA-1072920-A (CA)
Inventor: KELLEY JAMES E
IPC: B25D17/28
Filed: 1978-04-06
Granted: 1980-03-04
Abstract: APPARATUS FOR FORCIBLY ENGAGING MACHINE ASSEMBLIES     Abstract of the Disclosure A locking apparatus has first and second assemblies each containing an inclined plane.  The inclined planes contact one another at a locking position and releasably fix  the first assembly to the second assembly.  The apparatus includes means for urging one of the inclined planes into the other at a force sufficient for maintaining the inclined planes in contact one relative to the other during move-ment of one assembly relative to the other and during wear for maintaining locking contact and compensating for the wear.
Patent CA-1131833-A (CA)
Inventor: CLARKE RAYMOND
IPC: C08L33/00
Filed: 1978-04-10
Granted: 1982-09-14
Abstract: A B S T R A C T            The invention provides a polymer composition which comprises a crosslinkable or crosslinked blend of an elastomer and a thermoplastic polymer, the elastomer comprising a polymer of ethylene with an ethylenically unsaturated aliphatic ester, and the elastomer and the thermoplastic polymer being substantially free of halogen-containing substituents.  The preferred compositions may be used as jacketing materials for wire and cable, as harnessing materials, and in the manufacture of heat recoverable articles having improved oil resistance and thermal ageing properties.
Patent CA-1047994-A (CA)
Inventor: HICKMAN RONALD P
IPC: E06C7/42
Filed: 1978-04-20
Granted: 1979-02-06
Abstract: ABSTRACT OF THE DISCLOSURE         A foldable ladder is disclosed having a central and two outer parallel support members or "stiles" and a plurality of steps connected between the central and the outer stiles.  Each step is arranged to fold between an erected position, in which it extends generally at right angles to the longitudinal direction of the stile to which it is connected, and a storage position in which the step lies generally parallel to the central stile with the outer stile to which it is connected extending parallel to and in close juxtaposition with the central stile.  Engaging means are provided adjacent the upper end of the central stile for holding cooperating engaging means of a supporting member such as another ladder section (forming an extension ladder) or a prop extending to ground (forming a step ladder).  A foldable leg structure is provided at the bottom of the central stile for supporting the ladder on the ground or floor.
Patent CA-1106935-A (CA)
Inventor: GUSTAFSON REUBEN V
IPC: G01F23/26
Filed: 1978-05-04
Granted: 1981-08-11
Abstract: LIQUID LEVEL SENSOR                            ABSTRACT       A pair of wires are encased in a non-absorbing corrosive-resistant material such as Teflon and disposed vertically inside a tank or the like with the wires brought out to a capacitive sensing device to provide a liquid level sensor operable in almost any liquid and some dry granular materials.
Patent CA-1088606-A (CA)
Inventor: MUSSELMAN LAWRENCE L
IPC: F16C19/36
Filed: 1978-06-06
Granted: 1980-10-28
Abstract: ABSTRACT OF THE DISCLOSURE           A single row tapered roller bearing capable of taking radial loading as well as thrust loading in both axial direc-tions has a cone provided with an integral thrust rib at the small diameter end of its raceway, a cup surrounding the cone, tapered rollers between the raceways of the cup and cone, a separate rib ring at the large diameter end of the cup race-way, and a cage for maintaining correct spacing between the rollers in the circumferential direction.  The cage at one end has an outwardly directed lip which is too large to fit through the rib ring and at its other end has outwardly directed tabs which are too large to fit through the cup without deflecting. In effect, the cup and rib ring are captured between the lip and tabs on the cage, and since the rib ring and cup cannot separate, the rollers and cone remain in place, providing a bearing which is unitized sufficiently for normal handling.
Patent CA-1095214-A (CA)
Inventor: BUELL KENNETH B
IPC: A61F13/15
Filed: 1978-06-26
Granted: 1981-02-10
Abstract: METHOD AND APPARATUS FOR CONTINUOUSLY FORMING AN AIRLAID  FIBROUS FLUFF WEB ADJACENT THE UPPERMOST AND LOWERMOST SURFACES OF A SUBSTANTIALLY PLANAR INTERNAL REINFORCING   PLY HAVING SUBSTANTIALLY THE SAME WIDTH AS SAID WEB                 Kenneth B. Buell ABSTRACT         A continuous in-line method for forming an airlaid fibrous fluff web adjacent the uppermost and lowermost surfaces of a substantially planar internal reinforcing ply having substantially the same width as said fibrous web, said ply being substantially impervious to the passage of fibers from one surface thereof to the other, in a continuous fiber deposition zone is disclosed.  In a preferred embodiment, a unique tissue folding board is employed to permit continuous formation of an airfelt web having a wet strength tissue reinforcing member located approximately mid-way between its uppermost and lowermost surfaces.  Two adjacent vacuum chambers are preferably employed in the continuous forming zone to compensate for the increased airflow restriction encountered when forming the uppermost fibrous web position over the reinforcing ply and the lowermost fibrous web portion.  In a particularly preferred embodiment, the portion of the internal ply relative to the uppermost and lowermost surfaces of the resultant pad may be adjusted by advancing or retarding the position of the folding board within the fiber deposition zone.
Patent CA-1112165-A (CA)
Inventor: GORDON ROBERT T
IPC: A61P35/00
Filed: 1978-06-28
Granted: 1981-11-10
Abstract: ABSTRACT A treatment of cancer by the application of external electromagnetic energy capable of the generation of heat in intracellular particles to induce selective ther-mal death of cancer cells in living tissue. The process comprises introducing into the interior of the cells of living tissue minute particles, with properties, such as ferromagnetic, paramagnetic, or diamagnetic, so as to be inductively heated when subjected to a high frequency alter-nating electro-magnetic field. Further selectivity and increased affinity of the cancer cells for the particles may be achieved by incorporating specific radioisotopes or tumor specific antibodies bound to the particles. The particles may be used as a method of delivering a chemotherapeutic agent primarily to the interior of the cancer cells by having the chemotherapeutic agent encapsu-lated within said particles and released at the proper time by application of the high frequency alternating electro-magnetic field or by solubilizing the said particles within the cells. A cancer-treating composition including minute particles suspended in an aqueous solution in dosage form. The particles may be bound to radioisotopes or to cancer antibodies to more effectively direct the absorption by the cancer cells.
Patent CA-1110841-A (CA)
Inventor: FLYNN CHARLES S
IPC: D06C3/00
Filed: 1978-07-28
Granted: 1981-10-20
Abstract: TENTOR ABSTRACT OF THE DISCLOSURE An oven for treating web stock, especially a tentor for treating textile fabric, to remove volatile combustible substances therefrom in a manner that results in more rapid operation with less capital outlay for equipment, less fuel consumption, and controlled stack discharge.  The oven employs a recycle circuit in which the temperature of the oven discharge gaseous stream is first raised by com-bustion of the volatilized substances therein, and then lowered by entry of cooler, supplemental air, after which part of the gaseous stream is returned to the oven and part used for stock preheating or post heating in other oven sections.